TWO4BRIDGE, on 2011-December-13, 17:23, said:
I think you can only get ♣ into the picture with a 2♠ rebid after 2♥ ( for the reasons others have stated ).
Partner will know you have at least 8 cards in the blacks.... more likely 9 cards.... and possibly 10.
1H - 2C! ( 2/1 GF )
2H - 2S
3D - 3H
4H - 5NT! ( choice of slams; forget about RKC-ask with your 22 hcp hand )
Even with your original auction, just bid 5NT! ( or maybe 6C would be a clearer "choice-of-slams" bid since Club length had not be clarified earlier ) directly over 4H.
When you say 5NT is "choice of slams", do you mean choice of small slams? If so, how do you plan to get to a grand slam? It's not obvious that partner will also cue
♦A over 3
♥ on your auction.
I wouldn't have chosen 3
♥ myself, but the player who bid it explained his reasoning to me. He wanted to be in a grand slam (presumably 7NT) opposite
♥AK and
♦A and a nice simple way to find out about this is to agree hearts then use RKCB. He was concerned that if he bid something else, it might become harder to find out about
♥AK and
♦A later.
In an ideal world, you want to be able to find out all of:
1. Whether partner has
♥J and/or a 7th heart
2. Whether partner has
♣J
3. How many clubs partner has.
4. Whether partner has
♦A
5. Whether partner has
♦Q
6. Whether partner has
♠Q
Maybe a series of relays would help. In the absence of a relay system I would bid a natural 2
♠, but I would not be confident that I would be able to find out everything I needed to know.